The application is based on the Blessed Songbook, published by the Transylvanian Reformed Church District Youth Association (IKE) in 2020, so that the Christian youth songs and church songs in the collection are available to all generations by phone. In the app, we worked with simpler chords compared to the songbook so that even those who had just started making music could take a musical instrument and play the songs. The application allows you to search, transpose chords, increase the font siz